345005661605 has 16 divisors (see below), whose sum is σ = 460165359744. Its totient is φ = 246178994880.

The previous prime is 345005661601. The next prime is 345005661607. The reversal of 345005661605 is 506166500543.

It is not a de Polignac number, because 345005661605 - 2² = 345005661601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345005661601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59174729 + ... + 59180558.

It is an arithmetic number, because the mean of its divisors is an integer number (28760334984).

Almost surely, 2^345005661605 is an apocalyptic number.

It is an amenable number.

345005661605 is a deficient number, since it is larger than the sum of its proper divisors (115159698139).

345005661605 is a wasteful number, since it uses less digits than its factorization.

345005661605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118355356.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 345005661605 in words is "three hundred forty-five billion, five million, six hundred sixty-one thousand, six hundred five".